Ok and, whats the question
Answer:
P': (0,-2) S: (0,-7) Q: (-5,-3) R:(-8,-7)
Step-by-step explanation:
The measure of angle ABC would be 66 degrees
Note that
sin(x + y) = sin(x) cos(y) + cos(x) sin(y).
Therefore by setting x = π/2 and y = π/7, obtain
sin(π/2 + π/7) = sin(π/2)*cos(π/7) + cos(π/2)*sin(π/7)
The right side is what we want to evaluate. It is equal to
sin(π/2 + π/7) = sin (9/14)π
Answer: